Travel Assembly for Dump Truck - Wheels of a dump truck are each provided with a travel assembly for transmitting an output of an electric motor to the wheel via a reduction gear unit. The travel assembly is provided with a cooling circuit for cooling lube oil. The cooling circuit has an oil cooler and a recovery oil passage for guiding lube oil from a side of the gear unit to the cooler. The recovery oil passage has an intra-spindle recovery line inserted on a side of an inner periphery of a spindle, a suction pipe extending from the recovery line to a space surrounded by the spindle, the wheel and two spindle-supporting bearings, and communication holes formed in the wheel to communicate the side of the reduction gear unit with the space.

12-17-2009

20130045828

REVOLVING APPARATUS FOR CONSTRUCTION MACHINE - A planetary gear reduction mechanism is provided in a housing for making up a revolving apparatus, and the planetary gear reduction mechanism is constituted by a sun gear, a plurality of planetary gears, and a carrier. Lubricating oil for lubricating the planetary gear reduction mechanism is stored in the housing. A doughnut-shaped guide member for covering meshing portions of the sun gear and the planetary gears and for receiving the lubricating oil scattered from the meshing portions and guiding it to planetary gear bearings is provided at an upper position of the planetary gear reduction mechanism. Hence, the lubricating oil which is scattered from the meshing portions of the sun gear and the planetary gears can be efficiently guided to the planetary gear bearings through the doughnut-shaped guide member.

02-21-2013

20090270214

DEVICE FOR PHASE-SHIFTING THE ROTATIONAL ANGLE OF A DRIVE WHEEL RELATIVE TO AN OUTPUT SHAFT - A device for phase-shifting a rotational angle of a drive wheel relative to an output shaft. The device includes a planetary gear including a sun wheel, a hollow wheel and at least one planet wheel, wherein the sun wheel and the hollow wheel mesh with the at least one planet wheel. A planet wheel carrier having the at least one planet wheel is arranged thereon and is fixedly connected to the output shaft so as to commonly rotate with the output shaft. A drive wheel is connected to the planetary gear and is at least indirectly connected to the sun wheel. An actuator engages the planetary gear so that the hollow wheel is rotatable relative to the sun wheel. The actuator is disposed tangentially to the planetary gear and includes a worm engaging an outer toothing of the hollow wheel, with the sun wheel being at least indirectly connected to the drive wheel.

10-29-2009

20120238391

RING GEAR MOUNTING ARRANGEMENT WITH OIL SCAVENGE SCHEME - A turbine engine includes an input shaft and a fan shaft rotatable about an axis. The fan shaft supports fan blades. An epicyclic gear train is connected between the input shaft and the fan shaft. The epicyclic gear train includes a plurality of star gears, a carrier supporting the plurality of star gears, a sun gear that meshes with the plurality of star gears and a ring gear surrounding and meshing with the plurality of star gears such that the sun gear is rotatable in a first direction and the ring gear is rotatable in a second, opposite direction. The ring gear includes first and second portions that each have an inner periphery with teeth. The first and second portions include respective recesses facing one another to provide an internal annular cavity.

09-20-2012

20120238390

SPEED REDUCTION DEVICE AND SERIES OF SPEED REDUCTION DEVICES - A speed reduction device includes front and rear stage speed reduction mechanisms. The speed reduction device includes a connecting shaft that connects the front stage speed reduction mechanism to the rear stage speed reduction mechanism; bearings that support the connecting shaft; an oil supply port that is formed on one side of front and rear stage sides of the bearings; and communication passages that make a receiving section, which is closer to the front stage speed reduction mechanism than the bearings in a casing of the speed reduction device, communicate with a receiving section, which is closer to the rear stage speed reduction mechanism than the bearings.

09-20-2012

20090247347

LUBRICATING DEVICE FOR PINION GEAR IN PLANETARY GEAR SET - A lubricating device for a pinion gear in a planetary gear set provides smooth lubrication between a pinion shaft and a pinion bearing, and prevents scuffing due to lack of lubrication between the pinion shaft and a pinion gear. Oil may be supplied into a hollow of the pinion shaft while maintaining a level of lubrication pressure while the oil is discharged from an oil jet hole of a rotary shaft. The lubricating device may include an oil guide for supplying oil to a hollow of a pinion shaft supporting the pinion gear, the oil guide including a main body disposed about a rotary shaft and a closed outer circumference, the main body and outer circumference defining an oil-storage space in fluid communication with an oil jet hole of the rotary shaft, and/or a sub-body extending from the main body into the hollow of the pinion shaft and having an inner passage fluidly communicated with the oil-storage space.

10-01-2009

20100009799

WIND TURBINE TRANSMISSION ASSEMBLY - A transmission assembly included in a power generation system of a wind turbine, the wind turbine having one or more wind driven rotor blades. The transmission assembly includes a transmission including an input carrier and a gear-train rotatably coupling the input carrier to a transmission output, the input carrier configured to transfer a rotational input from the rotor blades to the gear-train and a removable input bearing cartridge coupled to a periphery of the input carrier, exterior to the gear-train, the removable bearing cartridge in axial alignment with the input carrier.

01-14-2010

20100113205

SHEATH ASSEMBLY FOR A PLANETARY GEAR - A gear train assembly includes a planetary gear set partially submerged in an oil bath and having a plurality of planetary gears mounted on a rotatable carrier. A plurality of sheaths having a hydrodynamic profile are mounted on the carrier to reduce the churning and turbulence created by the planetary gears as they enter the oil bath.

05-06-2010

20110092330

PLANETARY BEARING STRUCTURE - In a planetary bearing structure equipped with a slide bearing mounted to a shaft hole of a planetary gear, the planetary gear rotating about the outer periphery of a planetary pin fixed to a carrier via the slide bearing, one or a plurality of oil supply grooves are formed in the outer peripheral surface of the planetary pin so as to extend in the axial direction. An oil supply port of a lubricant oil channel opens in the oil supply groove so as to forcedly supply lubricant oil. Furthermore, a discharge groove for trapping foreign matter, which is shallower than the oil supply groove, communicates from the oil supply groove to the wake flow side in the rotating direction of the planetary gear.

04-21-2011

20120108380

PLANETARY GEAR MECHANISM FOR A WIND POWER PLANT - A planetary gear mechanism for a wind power plant includes a sun gear, an internal gear and a planetary carrier with planetary gears supported by radial and axial slide bearings. The radial slide bearings include a sleeve made of a slide bearing material and attached as an inner ring to a planetary gear shaft or mounted as an outer ring in a bore in a planetary gear. An outer bearing ring cooperating with the inner ring is formed by the bore in the planetary gear, or an inner bearing ring cooperating with the outer ring is formed by the planetary gear shaft. A slide bearing material of a first bearing element of the axial slide bearings is applied between a planetary carrier cheek and an end side of a planetary gear. The end side of the planetary gear or the planetary carrier cheek forms a corresponding cooperating second bearing element.

05-03-2012

20090088282

AUTOMATIC TRANSMISSION - In an automatic transmission, a planetary gear set is disposed adjacently to an end cover and configured such that its inner peripheral face of a carrier is rotatably supported on an outer peripheral face of a boss portion provided at the end cover. A lubricating-oil supply passage comprises an oil passage formed from the end cover to the boss portion, an oil passage formed in the carrier so as to tightly connect to the oil passage at the inner face of the carrier, and an oil passage formed in the pinion shaft so as to tightly connect to the oil passage and reach an outer peripheral face of the pinion shaft. There is provided a lubricating oil supply means for supplying lubricating oil to the bearing portion via the above-descried lubricating-oil supply passage.

04-02-2009

20090082156

TRANSMISSION APPARATUS - A transmission apparatus includes a wet rotary clutch configured to transmit power from an input to an output when in an engaged position, a clutch lubricator to supply a lubricating oil to the wet rotary clutch, a synchromesh configured to perform a meshing operation while the wet rotary clutch is in the disengaged position, and a controller configured to increase a revolution speed of the input of the wet rotary clutch before the synchromesh begins the meshing operation.

03-26-2009

20090247348

PLANETARY TRANSMISSION - A planetary gear set lubricating unit which supplies oil from inside a component adjacent the planetary gear set, via a radial bore and an oil catcher, axially through a bore of a planetary gear bolt to planetary gear bearings. The oil catcher forms a ring-shaped chamber, which can be filled with lubricant, and is arranged beside the planetary carrier approximately over the reference diameter of the planetary bolt. The oil catcher has outlet pipes extending axially to direct oil in the chamber. The oil catcher has ovular radial protrusions arranged such that a maximum radial dimension is close to the bolts and a minimum radial dimension is arranged between adjacent planetary bolts. The radially inner edge of the axial bore of the planetary bolts is radially located between the minimum and maximum dimensions of the protrusions. The chamber is delimited by a cover plate and a gasket.

10-01-2009

20080287243

Reducer and method of use thereof - The reducer contains a lubricant inside, which is at least partly flowable during the operation, the inside of the reducer being tightly sealed from the outside. The reducer includes a communicating part that communicates the inside and the outside of the reducer. The communicating part is blocked with a blocking member that has oil repellency, air permeability, and non-permeability to oil.

11-20-2008

20140287864

PINION LUBRICATION STRUCTURE OF PLANETARY GEAR MECHANISM - A pinion lubrication structure of a planetary gear mechanism includes a hollow portion, an annular oil catcher, an oil gallery, and an aperture. The annular oil catcher is supported by a carrier to collect oil to flow into the hollow portion. The oil is supplied outward in a radial direction from a central portion of the planetary gear mechanism. The oil is supplied to an inner peripheral surface of a pinion through the oil gallery. The oil gallery extends from an inside of the hollow portion through a pinion shaft in the radial direction. The aperture is provided at an axial end of the pinion shaft to be connected to the hollow portion. A distance from an axis to an outer end of the aperture in the radial direction is smaller than a distance from the axis to an outer end of the hollow portion in the radial direction.

Transfer Case for a Motor Vehicle Powertrain - A motor vehicle powertrain includes a multiple speed transmission including a first lube circuit that supplies hydraulic lubricant to components of the transmission, a first oil sump, and a first pump driveably connected to an engine for supplying oil at a first pressure to the lube circuit, a transfer case including a first output, a second oil sump located in the transfer case, a second pump located in the transfer case and driveably connected to the first output, and a check valve for alternately opening and closing a connection between the first pump and the lube circuit and for opening and closing a connection between the second pump and the lube circuit in response to differential pressure between an outlet of the first pump and an outlet of the second pump.

SHOVEL - A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped, a case forming a space in which the turning speed reducer and the brake unit are lubricated with lubricant oil and accommodated, a collar fixed around an output shaft of the turning speed reducer so as to rotate with the output shaft and covering at least a part of a relief part formed at a time of forming splines on the output shaft, and a sealing member provided between the collar and the case and hermetically sealing the lubricant oil inside the space.

10-02-2014

20140296017

SHOVEL - A shovel includes a turning drive unit. The turning drive unit includes a turning electric motor, a turning speed reducer configured to transmit the rotational driving force of the turning electric motor to a turnable body, a brake unit configured to maintain the turnable body in a state where the turning of the turnable body is stopped, and a case forming a space in which the turning speed reducer and the brake unit are lubricated with lubricant oil and accommodated. A recess is formed in part of the case that forms a bottom surface of the space.

10-02-2014

20120028748

LUBRICATION SYSTEM FOR A PLANETARY GEAR SET - A planetary gear set for a transmission, the planetary gear set having a sun gear, a ring gear and a carrier assembly. The carrier assembly includes an annular first carrier member, at least one pinion pin, and at least one planet gear assembly. The first carrier member has at least one radial groove connecting a step surface to an inner surface of a pinion pin bore. A pinion pin has a bearing surface and a bore. The bore has a first and a second open end, the first open end in communication with the bearing surface the second open end in communication with the radial groove of the carrier member.

OIL BAFFLE FOR GAS TURBINE FAN DRIVE GEAR SYSTEM - An epicyclic gear train component includes spaced apart walls with circumferentially spaced mounts that interconnect the walls. The mounts provide circumferentially spaced apart apertures between the mounts at an outer circumference of the walls. Baffles are arranged between the walls near the mounts. Gear pockets are provided between the baffles and the baffles include a lubrication passage that terminates at least one of the gear pockets. One of the walls includes a hole which has a tube that extends through the hole and is received in an opening in the baffle. The tube is in communication with the lubrication passage.

02-19-2015

20120196715

Final Drive Arrangement - A vehicle final drive includes a fixed spindle about which a wheel hub is mounted for rotation by wheel bearings, and within which a park and service brake assembly is mounted including a stack of Belleville springs carried by an input quill mounted within an inner end region, and a disc brake pack mounted within an outer end region. Located in the hub outboard of the spindle is a two-stage planetary reduction transmission. A reaction plate is fixed to an outer end face of the spindle cylindrical portion and holds the disc brake pack and a hub of a double ring gear of the transmission in place and preloads the wheel bearings. A fluid distribution manifold is defined by a passage in the spindle for distributing flow for cooling and/or lubricating an input thrust bearing, input drive shaft coupling splines, the brake disc pack, the wheel bearings, and the first stage planet gear bearings.

08-02-2012

20100160104

EPICYCLIC GEARBOX FOR A WIND POWER INSTALLATION - A first planet stage of an epicyclic gearbox revolves in a gearbox housing and includes a planet support having two interconnected side pieces. Planet gears are borne in the planet support via planet gear bearings and engage a central sun gear shaft and a hollow gear secured to the gearbox housing. A first channel has one end connected to an oil supply in communication with an oil feed pump and passes through a gearbox housing wall, and another end connected via second channels, passing through one side piece of the planet support, to third and fourth channels, passing through the shafts of the planet gears and open to the planet gear bearings. The first channel passes through an insertion apparatus secured in the gearbox housing and. The first planet stage is complemented by a second planet stage with a second planet support, second planet gears and a second sun gear shaft, with the insertion apparatus including a radial stator with an axial bush arranged radially between the first and second planet supports.

06-24-2010

20120142475

Running Device for Dump Truck - A dump truck has a flange on an inner peripheral wall of a spindle. The flange arranges a support bearing for supporting a shaft. The spindle is formed of a chassis-side member and a reduction gear unit-side member joined together by welding. The chassis-side member is fixed on a chassis of the dump truck, and the reduction gear unit-side member is located closer to a side of the reduction gear unit than the chassis-side member. The reduction gear unit-side member is located on a side of an outer periphery of the shaft portion, where a distance to a coupling between the motor and shaft and a distance to a first sun gear between the reduction gear unit and shaft are equal to each other. On an inner peripheral wall of the reduction gear unit-side member, the flange is cast together with the reduction gear unit-side member.

06-07-2012

20100144479

LUBRICATION OF A PLANETARY GEARSET - In a planetary gearset and an automatic transmission according to the invention, a pinion shaft on which a pinion gear is rotatably supported includes a bearing portion on which a bearing is attached and a polygonal portion having a polygonal outer periphery. An axial oil passage and radial oil passages that communicate with the axial oil passage are formed in the polygonal portion, and the inlet of each radial oil passage formed in the pinion gear faces the polygonal portion.

06-10-2010

20090221391

CONTINUOUSLY AND/OR INFINITELY VARIABLE TRANSMISSIONS AND METHODS THEREFOR - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously or infinitely variable transmissions (C/IVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a C/IVT. In another embodiment, a lubricant manifold is adapted to cooperate with the main axle of the C/IVT to supply lubricant to the interior of the C/IVT. Embodiments of a drivetrain housing and housing cover plate are adapted to house components of a C/IVT and, in some embodiments, to cooperate with other components of the C/IVT to support operation and/or functionality of the C/IVT. Shift control interfaces for a C/IVT are disclosed that include, for example, a shift actuation subassembly having a translatable and rotatable shift pin collar. Mechanisms that facilitate shifting of the C/IVT are disclosed that include a shift rod and shift cam adapted to supply lubricant to the interior of the transmission.

09-03-2009

20090111637

METHOD AND APPARATUS TO CONTROL HYDRAULIC PRESSURE FOR COMPONENT LUBRICATION IN AN ELECTRO-MECHANICAL TRANSMISSION - A method for controlling hydraulic line pressure for component lubrication in a transmission includes monitoring a speed of an engine and an electric machine, determining a minimum line pressure required to lubricate the engine based upon the speed of the engine, determining a minimum line pressure required to lubricate the electric machine based upon the speed of the electric machine, controlling a minimum line pressure of a hydraulic control system to at least satisfy a larger value of the minimum line pressures.

04-30-2009

20090017954

Lubricating oil feeding device for automatic transmission - A lubricating oil feeding device includes a carrier and a carrier cover that are attached to both ends of the pinion shaft of the planetary gear and that are arranged in an axial direction of an input shaft of the automatic transmission; an oil sump groove that opens in a peripheral direction and the axial direction of the input shaft, the oil sump groove is structured by a wall portion of the carrier cover formed radiating from a center of the input shaft, a base portion of the carrier cover that extends in an axial direction of the pinion shaft, and an end portion on an inner peripheral surface of a clutch hub that is connected with the base portion; and an oil passage that feeds lubricating oil from the oil sump groove to the pinion shaft, and provides the lubricating oil for the planetary gear.

01-15-2009

20140287865

ROTATING ELECTRIC MACHINE - A rotating electric machine includes a rotor having a cylindrical peripheral wall having a permanent magnet arranged circumferentially therein, and a stator provided on an outer side of the peripheral wall of the rotor. Further, the rotating electric machine includes a planetary roller provided in a planetary roller mechanism chamber on an inner side of the peripheral wall of the rotor so as to be rotated by a rotation of the rotor transmitted from the peripheral wall to a planetary roller surface of the planetary roller, an output shaft provided on the inner side of the peripheral wall of the rotor so as to be rotated by a rotation of the planetary roller transmitted to the output shaft via the planetary roller surface, and magnetic lubricating oil included in the inner side of the peripheral wall of the rotor.

FLUIDIC SYSTEM, A DRIVE TRAIN FOR A WIND TURBINE AND A METHOD FOR ACTUATING A MECHANICAL COMPONENT - A fluidic system mechanically coupled to a mechanical component is provided. The fluidic system comprises a first pump of a first type coupled to the mechanical component and a second pump of a second type in fluid communication with the first pump. The fluidic system can operate in a pumping mode in which at least the first pump feeds a fluid through the fluidic system. The fluidic system can further operate in an actuating mode in which the second pump feeds the fluid through the fluidic system and the first pump extracts energy from the fluid flow. Further, a drive train for a wind turbine and method for actuating a mechanical component are provided.

03-04-2010

20090215568

Travel Assembly - A travel assembly, for example, suited for arrangement on a vehicle such as a mining dump truck, is provided with a travel motor, a planetary speed reduction mechanism for transmitting rotation of the travel motor at a lower rotational speed, a spindle forming an axle, and a wheel supported on the spindle via a tapered roller bearing and rotatable by the planetary speed reduction mechanism. The planetary speed reduction mechanism includes a sun gear rotatable by rotation of a shaft of the travel motor, planet gears for rotating the wheel in response to rotation of the sun gear, stepped pins forming rotary shafts for the planet gears, a carrier for holding the stepped pins thereon, and bolts for fixedly securing the stepped pins on the carrier. The travel assembly is provided with a spline connection connecting the spindle and the carrier with each other and a limiting member for limiting movements of the bolts in a direction toward the tapered roller bearing.

08-27-2009

20110251010

Planetary Gear - A planetary gear, in particular a multi-stage planetary gear, includes at least two sun wheels, which are disposed coaxially one behind the other. A hydrodynamic axial bearing is arranged between the sun wheels.

10-13-2011

20090082155

VEHICULAR AUTOMATIC TRANSMISSION - A vehicular automatic transmission including first and second shafts coaxially splined to each other at their adjacent axial end portions, and a lubrication system including: first and second lubrication passages formed through the respective first and second shafts in their axial direction, in communication with each other through the adjacent axial end portions, oil outlet holes in communication with the lubrication passages and spaced apart from each other in the axial direction, and first and second oil inlet holes formed through the respective first and second rotary shafts such that the oil outlet holes are located between the oil inlet holes and the adjacent axial end portions of the shafts, so that lubricating oil introduced into the lubrication passages through the respective oil inlet holes flows through the lubrication passages toward the adjacent axial end portions of the shafts.

03-26-2009

20130035190

JOURNAL PIN OIL SUPPLY FOR GEAR SYSTEM - An example journal pin includes a generally cylindrical body disposed on an axis having a supply passage. A first chamber and a second chamber are disposed in the generally cylindrical body and are in fluid communication with the supply passage. A recess on an outer diameter of the cylindrical body is in fluid communication with the first chamber and the second chamber. The first chamber and second chamber are each radially outward of the supply passage and including an outlet to the recess. The first chamber and second chamber each have a first section radially inward of a second section. A cross sectional area of the second section is greater than a cross sectional area of the corresponding first section.

02-07-2013

20120302391

UNINTERRUPTIBLE OIL SUPPLY IN PLANETARY SYSTEM - A planetary carrier includes a journal bearing for supporting a planetary gear. The journal bearing receives lubricant to produce a lubricant film to support gear loads. A torque frame is attached to the carrier housing to transmit torque and to prevent twisting of the carrier housing. The torque frame includes several lubricant communication passages to provide lubricant to each of the separate journal bearings. Each of the lubricant communication passages includes an accumulator for storing lubricant during normal operation. The accumulator stores a desired amount of lubricant to provide lubricant to the adjacent journal bearing for the interim period between primary system stoppage and reestablishment of lubricant flow by a secondary system.

11-29-2012

20120046139

Pressure Oil Lubrication of the Gear Wheels of a Planetary Gear Set - A planetary gear set with a planet stage revolving in a gear set housing has a planet carrier which is connected in particular to a rotor and has planet web cheeks which are connected to one another by means of webs, and a plurality of planet gears which are mounted in planet gear bearings, which are connected to the planet carrier, and are in engagement on one side with a sun gear and on the other side with a ring gear. The gear set housing is provided with an oil supply channel which is connected to at least one oil-guiding channel in the planet carrier. The lubrication of the meshing engagements is facilitated in the planetary gear set by providing dry sump lubrication. This is achieved in that at least one channel connected to the oil-guiding channel is embedded in each web, said channel being aligned with the meshing engagements between sun gear and planet gear and/or planet gear and ring gear.

02-23-2012

20120004065

ELECTRIC GENERATOR UNIT - An electric generator unit comprises a front flywheel, a back flywheel, a gear accelerating assembly, a planetary decelerating assembly, a middle shaft and a tail shaft. The electric generator unit forms the effect of energy increasing by degrees based on the nonlinear coupling theory and the assembly of mass, acceleration and lever. When a small driving force is continuously given from the outside, the electric generator unit can achieve energy increasing by degrees.

01-05-2012

20100151981

Control of the Flow Rate in a Transmission Oil Cooler - A system for controlling a flow rate in a vehicle transmission includes a source of fluid exiting a torque converter, an oil cooler, a source of control pressure, and a valve for regulating a rate of fluid flow from the torque converter to the cooler in response to the control pressure.

06-17-2010

20120071288

METHOD FOR MODIFYING AN AUTOMATIC TRANSMISSION AND GEAR TRAIN - The present invention relates to methods for modifying automatic transmissions and gear trains. In particular, the instant invention relates to methods for modifying an automatic transmission gear train in order to improve resistance to deterioration. The modified gear grain of the instant invention comprises eight pinion gears assembled into one carrier utilizing a forward and a rear sun gear, a ring gear, a band drum and a one way roller clutch.

03-22-2012

20120157256

BEARING OIL SUPPLY STRUCTURE FOR WIND TURBINE GENERATOR - In a bearing oil supply structure for a wind turbine generator provided with a planetary-type planet gear box having a planet gear that rotates about a planet pin fixed to a carrier with a slide bearing interposed therebetween, lubrication of the slide bearing is achieved by supplying lubricant oil by using an oil bath in a lower rotation region and by supplying lubricant oil by injecting lubricant oil pressure-fed from a lubricant oil source through a nozzle in an upper rotation region.

06-21-2012

20120157257

POWER TOOL - A screw-fastening tool having a continuously-variable transmission traction drive includes a continuously-variable transmission, a thrust cam mechanism of the continuously-variable transmission and a clutch plate of a fastening torque setting mechanism arranged in series between an electric motor and a spindle. A traction grease having a high traction coefficient is used as a lubricant for a traction drive. A grease reservoir or felt members in sliding contact with oppressing parts are disposed in a transmission case.

06-21-2012

20100160105

OIL BAFFLE FOR GAS TURBINE FAN DRIVE GEAR SYSTEM - A gas turbine engine includes an epicyclic gear train that drives a turbo fan. The epicyclic gear train employs a one-piece carrier in which the spaced side walls are interconnected with circumferentially spaced apart mounts to form a unitary structure. Baffles are secured to the carrier near the mounts and provide lubrication passages that spray oil onto the sun gear and/or intermediate gears arranged between the baffles. The baffles can be constructed from a different material than the carrier since the baffles are not structural components in the gear train.

06-24-2010

20120165152

POWER TOOL - In a disc grinder, a spindle mounted with a grindstone intersects an output shaft of an electric motor. The disc grinder includes the three-point pressing continuously-variable transmission between the output shaft of the electric motor and a bevel gear train. The bevel gear train is used for deceleration. The traction grease having a high traction coefficient is used as the lubricant of the traction drive. A grease reservoir or felt members arranged in sliding contact with the pressing parts are disposed in the transmission case.

06-28-2012

20130065724

TRAVEL DRIVE DEVICE FOR DUMP TRUCK - There are provided a rotational shaft provided in a spindle, a wheel mounting cylinder which is mounted through wheel support bearings on an outer peripheral side of the spindle, and a planetary gear reduction mechanism for decelerating rotation of the rotational shaft, which is transmitted to the wheel mounting cylinder. A carrier forming a part of the planetary gear reduction mechanism is mounted in a non-rotating state on an open end side of the spindle. A cylindrical coupling member is provided between an open side of the spindle and the carrier. An oil guide path is formed between a one-side end surface of each of planetary gears and an opposing surface portion of a cylindrical coupling member for guiding lubricant oil ejected from a meshing part therebetween to a planetary gear bearing.

03-14-2013

20130065725

DRIVE TRANSMISSION UNIT AND IMAGE FORMING APPARATUS INCLUDING SAME - A drive transmission unit includes a planetary gear mechanism. The planetary gear mechanism includes an outer gear rotatably disposed on a shaft, a sun gear rotated by a power source, coaxially disposed on the same shaft as the outer gear, multiple planetary gears to engage the sun gear and the outer gear, disposed along an inner circumferential surface of the outer gear, a carrier rotatable on the same shaft as the outer gear to rotatably support the planetary gears, a contact member that contacts the sun gear as the sun gear moves in a direction of thrust due to engagement with the plurality of planetary gears, and a grease retaining portion to retain grease near a contact portion at which the sun gear contacts the contact member as the sun gear moves in the direction of thrust. The outer gear, the sun gear, and the planetary gears are helical gears.

SPEED/TORQUE ENHANCING POWER TRANSMISSION - A speed/torque enhancing power transmission is disclosed that translates slow rotating, high torque motion to high rotation, low torque motion or alternatively high rotating low torque motion to low rotating high torque motion and is suitable as a speed increaser for use in a device like a wind turbine. As a speed increaser the transmission has certain advantages, such as reduced weight and/or size compared to other units having the same performance characteristics. The speed increaser employs a pair of externally toothed spur gears orbiting in a non-rotating manner 180° out of phase inside an internally toothed ring gear. The input drives the ring gear and the orbiting spur gears drive separate eccentrics on the output shaft extending in opposite directions to provide dual output. In one embodiment, cross guide projections on the spur gear and cross guide projections on the housing engage slots in a swash plate.

10-11-2012

20120322606

ROTATING PLANETARY GEAR CARRIER LUBRICATION DEVICE - A planetary gear assembly having improved planet gear lubrication includes a thrust bearing assembly mounted to the planet gear carrier which provides a friction reducing interface between the carrier and a hub or stationary transmission member. A lubrication dam located radially outwardly of the thrust bearing assembly collects transmission fluid (oil) that has been supplied through a centrally disposed shaft and driven to and past the thrust bearing and into the dam by centrifugal force. Transmission fluid collecting within the dam and between the thrust bearing assembly and the planet gear carrier generates a biasing force which drives the thrust bearing assembly away from the planet gear carrier, thereby ensuring that the bearing position is not indeterminate and positively locating the thrust bearing assembly and providing an annular flow path for the transmission fluid which is then directed into a plurality of axial passageways in stub shafts which support the planet gears. At least one radial passageway in each stub shaft provides lubricating transmission fluid to a bearing assembly disposed between the stub shaft and the planet gear.

12-20-2012

20090215569

Travel Assembly - A travel assembly, for example, suited for arrangement on a vehicle such as a mining dump truck, is provided with a travel motor, a planetary speed reduction mechanism for transmitting rotation of the travel motor at a lower rotational speed, a spindle forming an axle, and a wheel supported on the spindle via a tapered roller bearing and rotatable by the planetary speed reduction mechanism. The planetary speed reduction mechanism includes a sun gear rotatable by rotation of a shaft of the travel motor, planet gears for rotating the wheel in response to rotation of the sun gear, and a carrier for holding the planet gears. The travel assembly is provided with a spline connection connecting the spindle and the carrier with each other and an oil passage for guiding internal lube oil of the planetary speed reduction mechanism to the spline connection.

LUBRICATION OIL SYSTEM FOR A REDUCTION GEARBOX - A reduction gear box is part of a gas turbine engine and includes a casing and reduction epicyclic gear stages within the casing. The reduction gear stages comprising at least an epicyclic array of gears meshing together with at least one planetary gear mounted for rotation on a gear carrier and a bearing associated therewith. A lubricating oil delivery system is provided within the casing, surrounding a portion of the gear carrier. The oil delivery system includes a conduit; a closed oil reservoir; a first metered opening communicating the conduit with the reservoir and a plurality of metered outlet openings communicating the reservoir with the gear carrier and the bearing such that the reservoir is filled with oil in normal flight operating conditions and the oil trapped in the reservoir is released to the carrier and bearing when a temporary drop in the oil system pressure occurs.

09-11-2014

20090098972

TWO-STAGE MACHINE TOOL GEARING, IN PARTICULAR SPINDLE GEARING - A two-stage machine tool transmission, in particular a spindle drive transmission, includes a planetary gearset in which a spindle or a spindle insert can be connected to a drive output of a transmission, which has a first drive output shaft and the second drive output shaft, such that the first drive output shaft is connected in a rotationally fixed manner to a drive input shaft and can optionally be connected, via a first shift element, to a sun gear of the planetary gearset. The second drive output shaft is connected in a rotationally fixed manner to a carrier of the planetary gearset. A ring gear of the planetary gearset is connected in a rotationally fixed manner to the transmission housing and a second shift element is provided such that a connection between the spindle or a spindle insert and, optionally, the first or the second drive output shaft, is possible.

04-16-2009

20150065285

GEARED ARCHITECTURE GAS TURBINE ENGINE WITH OIL SCAVENGE - A gas turbine engine includes a geared architecture with a multiple of intermediate gears, and a baffle with an oil scavenge scoop adjacent to each of the multiple of intermediate gears. A geared architecture and method are also disclosed.

03-05-2015

20120083379

LUBRICATION DEVICE FOR A PLANETARY GEAR - A lubrication device for a planetary transmission with a plurality of planetary gearsets in which a ring gear carrier, which supports a ring gear of a first planetary gearset, is connected to a planetary gear carrier which supports a plurality of planetary gears of an adjacent, second planetary gearset, and in which a lubricant supply for the planetary gears of the second planetary gearset is provided. To provide an inexpensive, simply designed and reliable lubricant supply to the planetary gears of the web carrier coupled to the ring gear of the other planetary gearset, the ring gear is sealed relative to the ring gear carrier of the first planetary gearset and relative to the planetary gear carrier of the second planetary gearset.

04-05-2012

20150126319

DRIVE DEVICE FOR CONSTRUCTION MACHINE - A drive device for a construction machine, which includes a speed reducer and a brake mechanism, wherein the speed reducer has a casing in which lubricating oil and the brake mechanism are provided, and wherein the brake mechanism includes: a ring-shaped brake piston; and a brake plate configured to generate a braking force by a pressing force of the brake piston, and wherein the brake piston has: a plurality of oil pockets provided in the brake piston at respective positions along a circumferential direction of the brake piston, each of the oil pockets formed as a space capable of storing lubricating oil; oil inlets allowing lubricating oil rising during operation of the drive device to be introduced into the oil pockets respectively; and oil outlets allowing lubricating oil stored in the respective oil pockets to be discharged.

05-07-2015

20110245008

Fatigue Resistant Transverse Lubrication Passage for Transmission Shafts - A lubrication system for transporting lubrication oil in an automatic transmission includes a radial lubrication passage opening at a hole in an outer peripheral surface of a shaft. The hole has a cross section that is elongated only along a first axis offset from a central axis the shaft so as to follow angular deformation caused by unidirectional torque applied to the shaft whereby stress produced around the hole by torque transmitted through the rotating shaft is reduced, thus minimizing fatigue and increasing a useful life of the automatic planetary transmission. Preferably cross sections of the radial passage taken sequentially along the transverse axis are elongated near outer peripheral surface of the shaft but become circular towards the central axis. With this arrangement stress produced around the hole by torque transmitted through the rotating shaft is reduced thus reducing fatigue and increasing a useful life of the transmission.

10-06-2011

20150072825

PLUG FOR A PLANETARY PIN ASSEMBLY - A pin assembly for use in a planetary gear, including a pin defining a blind bore therein, the blind bore extending axially from an opening and terminating with an end face, and an annular rib depending inwardly from an inner surface of the blind bore adjacent the opening. A plug includes a stopper portion and a shaft extending therefrom, the stopper portion including a circular base defining an outer perimeter. The outer perimeter of the stopper portion engages the annular rib, thereby maintaining the plug in the blind bore.

03-12-2015

20140011623

COUPLING SYSTEM FOR A GEAR TRAIN IN A GAS TURBINE ENGINE - An engine comprises a gear system and a coupler. The gear system comprises a sun gear, a ring gear, and a plurality of intermediate gears that engage the sun and ring gears. The coupler is for connecting the gear system to an engine static structure. The coupler is configured to limit deflection of the gear system. Two of the sun gear, the ring gear, and the plurality of intermediate gears are configured to rotate and/or orbit about a central axis. The third of the sun gear, the ring gear, and the plurality of intermediate gears is connected to the coupler and is configured not to orbit and/or rotate relative to the central axis.

01-09-2014

20100317478

JOURNAL BEARING WITH SINGLE UNIT JUMPER TUBE AND FILTER - A journal bearing includes a central body having first passageway and a filter module. The central body extends axially and is adapted to be supported at each outer end. The first passageway extends generally axially through a portion of the central body. The filter module is disposed in the first passageway and is configured to trap debris from a lubricant fluid flowing therethrough. In one embodiment, the filter module is adapted to be inserted and removed from the first passageway as a single unit, thereby allowing the filter module to be connected and disconnected from fluid communication with a lubricant manifold positioned adjacent the journal bearing.

12-16-2010

20100317477

EPICYCLIC GEAR SYSTEM WITH IMPROVED LUBRICATION SYSTEM - A journal bearing that includes a central body having first and second passageways and a filter. The central body extends axially and is adapted to be supported at each outer end. The first passageway extends generally axially through a portion of the central body. The filter is disposed in the first passageway and is configured to trap debris from a lubricant fluid flowing therethrough. The second passageway extends between both the first passageway and an exterior surface of the central body to allow for delivery of lubricant fluid thereto.

12-16-2010

20140274531

FAN DRIVE PLANETARY GEAR SYSTEM INTEGRATED CARRIER AND TORQUE FRAME - A fan gear drive system includes a fan shaft, a turbine shaft, a fixed structure, and a gear train which includes a torque frame that comprises a base with integrated gear shafts that are circumferentially spaced relative to one another. Each shaft provides a shaft axis. Intermediate gears are supported on each bearing assembly for rotation about the bearing axis. A central gear is located radially inward from and intermeshes with the intermediate gears. A ring gear is arranged about and intermeshes with the intermediate gears. One of the torque frame, central gear and ring gear is connected to the fan shaft. Another of the torque frame, central gear and ring gear is connected to the turbine shaft. The remaining of the torque frame, central gear and ring gear is connected to the fixed structure. A bearing assembly is mounted on each of the gear shafts and provides a bearing axis. Each bearing assembly supports the respective intermediate gear.

09-18-2014

20140011622

ROLLING BEARING AND A TRAVEL UNIT INCLUDING ROLLING BEARINGS - A rolling bearing includes rolling elements incorporated between an outer race and an inner race, a resin seal ring covering the opening of at least one end of the bearing space, and a filter covering an oil hole formed in the seal ring for capturing foreign matter contained in lubricating oil. The filter and the resin seal ring are integrated by insert molding. The filter and the seal ring are made of the same material. An annular lip portion, which is separate from the seal ring, is in contact with the outer race. An engaged portion provided on the radially inner side of the seal ring is engaged in a recess formed in the inner race such that, during thermal expansion of the seal ring, the engaged portion is engaged such that the seal ring is movable in the radial direction relative to the inner race.

01-09-2014

20130090204

FITTING FOR A VEHICLE SEAT - A fitting for a vehicle seat, in particular for a motor vehicle seat, includes a first fitting part, on which a ring gear is formed, a second fitting part, on which a gear is formed. The gear meshes with the ring gear, whereby the two fitting parts are in transmission connection with each other. It also includes a rotatably supported eccentric for driving a relative rolling motion of the gear and the ring gear, wherein the eccentric rotates in the circumferential direction and is driven by a carrier. An installation space is provided between the first fitting part and the second fitting part, wherein a separating ring is arranged in the installation space. The separating ring divides the installation space into an outer installation space, and an inner installation space.

04-11-2013

20140194240

JOURNAL PIN OIL SUPPLY FOR GEAR SYSTEM - An example journal pin includes a generally cylindrical body disposed on an axis having a supply passage. A first chamber and a second chamber are disposed in the generally cylindrical body and are in fluid communication with the supply passage. A recess on an outer diameter of the cylindrical body is in fluid communication with the first chamber and the second chamber. The first chamber and second chamber are each radially outward of the supply passage and including an outlet to the recess. The first chamber and second chamber each have a first section radially inward of a second section. A cross sectional area of the second section is greater than a cross sectional area of the corresponding first section.

07-10-2014

20100113204

APPARATUS AND METHOD FOR LUBRICATING A GEAR - A gear train assembly includes a first reduction planetary gear set having a rotating carrier and a second reduction planetary gear set having a non-rotating carrier. A plurality of vanes are attached to the carrier to direct oil from an oil bath towards the non-rotating carrier as the rotating carrier rotates.

05-06-2010

20100093479

CONTINUOUSLY VARIABLE TRANSMISSIONS AND METHODS THEREFOR - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT) having a variator provided with a plurality of tilting, traction planets and traction rings. In one embodiment, a variator is coupled to a rangebox to provide multiple operating modes. In another embodiment, a hydraulic system is configured to control the transmission ratio of the variator and the rangebox. Various inventive shift-cam-and-sun subassemblies can be used to facilitate shifting of the transmission ratio of a CVT. Embodiments of a transmission housing and bell housing are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Various related devices include embodiments of, for example, a pivot arm, a control feedback mechanism, axial force generation and management mechanisms, a control valve integral with an input shaft, a pivot pin hub, and a rotatable carrier configured to support planet-pivot arm assemblies. FIG.

04-15-2010

20090029820

Lubricating oil supply device for automatic transmission - In a lubricating oil supply device for an automatic transmission which supplies lubricating oil to a clutch arranged inside an automatic transmission, an oil reception section in a circumferential direction which receives the lubricating oil and is open in a shaft direction of an input shaft is formed in an approximately annular-shaped carrier cover by a wall section of the carrier cover which, together with a carrier, attaches a pinion shaft, a base section of the carrier cover extending in the shaft direction of the pinion shaft, and an end section as a part in an inner direction of the clutch hub connected with the base section of the carrier cover.

01-29-2009

20110172048

PLANETARY BEARING STRUCTURE - A planetary bearing structure which does not require forcible oil supply of planetary bearing using slide bearing, and which can reliably supply oil to a sliding surface and lubricate the sliding surface with a simple structure. The planetary bearing structure including: a planetary pin (

07-14-2011

20110218071

TRANSMISSION LUBRICATION ASSEMBLY - A transmission lubrication assembly includes a stator tube having a fluid passage and a sleeve bore, and a stator tube sleeve having a lubrication path provided along an external peripheral service thereof. In another aspect, the transmission lubrication assembly may include a solid input shaft rotatably received within the stator tube, a valve body, and a lubrication tube that provides fluid communication between the fluid passage and the valve body. In yet another aspect, a method of lubricating a transmission assembly includes providing a pressurized source of lubricating fluid, providing a stator tube comprising a fluid passage, and directing a portion of the lubricating fluid to a section of the transmission assembly by way of a stator tube sleeve, wherein the stator tube sleeve has an axial channel through which the lubricating fluid flows.

GEAR TRANSMISSION - A gear transmission is provided with an internal gear and an external gear that eccentrically rotates relative to the internal gear while meshing with internal gear. The internal gear includes first recesses formed on an inner circumferential surface of a case so as to be side-by-side in a circumferential direction, and inner pins inserted into the first recesses. A second recess is formed on the inner circumferential surface of the case within a distance from the center of a first recess along the circumferential direction that equals the tooth pitch of the external gear. Lubricant is retained in the second recess.

11-08-2012

20110124461

LUBRICATING STRUCTURE OF SPEED CHANGE MECHANISM - A lubricating structure for a speed change mechanism, which includes a planetary gear that supports a pinion gear, the pinion gear revolving around a sun gear while rotating, by a carrier via a pinion shaft. The lubricating structure configured with an oil receiver integrally attached to the carrier, and having a collecting portion for collecting oil, which is scattered from an inner diameter side, on a side opposite to the pinion gear with respect to a side plate of the carrier, and a guide portion for guiding the oil collected by the collecting portion. Furthermore, the guide portion extends through the side plate of the carrier, and has an opening on an inner diameter side of a center of the pinion shaft to supply the oil to a tooth surface of the pinion gear.

05-26-2011

20140087907

GEAR CARRIER FLEX MOUNT LUBRICATION - An example epicyclic gear train assembly includes a flexure pin received by a carrier. The flexure pin and the carrier respectively include first and second pin apertures configured to receive a retainer pin. The flexure pin further includes a lubricant conduit separate from the first pin aperture.

03-27-2014

20140087908

OIL TRAP RING DISK FOR A PLANET WHEEL CARRIER - An oil retaining plate for attachment to a planetary gear carrier. The oil retaining plate forms an annular pocket that is open toward the planetary gear carrier and has base wall sections that bulge radially outward to the radial level of the planetary gear axes of the planetary gear carrier.

03-27-2014

20120088624

PLANETARY GEAR SYSTEM ARRANGEMENT WITH AUXILIARY OIL SYSTEM - A lubricating system for lubricating components across a rotation gap has an input that provides lubricant to a stationary first bearing. The first bearing has an inner first race in which lubricant flows. A second bearing rotates within the first bearing and has a first opening in registration with the inner first race such that lubricant may flow from the inner first race through the first opening into a first conduit.

04-12-2012

20130172144

PLANETARY GEAR TRAIN WITH OILING SYSTEM FOR SUPPLYING LUBRICANT OIL TO BEARING OF PLANETARY GEAR AND WIND TURBINE GENERATOR INCORPORATING THE SAME - A planetary gear train is provided with: a planetary gear; a planetary pin for supporting the planetary gear; a carrier for supporting the planetary pin; and a housing for accommodating at least a portion of the carrier, the planetary gear and the planetary pin. The planetary gear is rotatable with respect to the planetary pin by a bearing. An oiling flow path for supplying lubricant oil to the bearing is formed inside the carrier. The carrier receives the lubricant oil into the oiling flow path from an oiling member stationarily fixed to the housing. The inlet for receiving the lubricant oil into the oiling flow path of the carrier from the oiling member is positioned inside the housing.

PLANETARY GEAR DEVICE - A planetary gear device comprises planetary shafts, a planetary gear supported on the planetary shafts via bearings, and an internally-toothed gear. The planetary shafts are arranged at positions offset from a shaft center of the internally-toothed gear. Orbital motion of the planetary shafts is restricted so as to retrieve rotation output from a casing integrated with the internally-toothed gear. Lubricant in which the bearings around some of the plurality of planetary shafts are immersed is sealed in the casing. The planetary gear device further comprises a retention part for retaining the lubricant on a part integrally rotated with the casing.

UNINTERRUPTIBLE OIL SUPPLY IN PLANETARY SYSTEM - A planetary carrier includes a journal bearing for supporting a planetary gear. The journal bearing receives lubricant to produce a lubricant film to support gear loads. A torque frame is attached to the carrier housing to transmit torque and to prevent twisting of the carrier housing. The torque frame includes several lubricant communication passages to provide lubricant to each of the separate journal bearings. Each of the lubricant communication passages includes an accumulator for storing lubricant during normal operation. The accumulator stores a desired amount of lubricant to provide lubricant to the adjacent journal bearing for the interim period between primary system stoppage and reestablishment of lubricant flow by a secondary system.

01-30-2014

20090042685

TRANSMISSION - A transmission includes a rotary shaft, a clutch hub fixed to the rotary shaft a transmission gear rotatably provided at the rotary shaft, a gear piece connected to the transmission gear at the side of the clutch hub, a synchronizer ring positioned between the clutch hub and the gear piece, a sleeve held by the clutch hub slidably in an axial direction, a fork engaged with the sleeve and a fork shaft connected with the fork for shifting the fork in the axial direction. The transmission performs synchronization operation of rotation of the clutch hub and the transmission gear. The fork shaft has an in-shaft lubricant passage provided therein, a lubricant supply passage and a lubricant outlet passage.

02-12-2009

20130172143

EPICYCLIC GEAR TRAIN FOR AN AIRCRAFT CAPABLE OF HOVERING - An epicyclic gear train, for an aircraft capable of hovering, having a sun gear rotating about a first axis; a fixed ring gear positioned coaxially with the first axis and radially outwards with respect to the sun gear; a number of planet gears, which are interposed between and mesh with the sun gear and the ring gear, and rotate about respective second axes, in turn revolving about the first axis; and lubricant feed means; the feed means having a number of nozzles arranged about the first axis and the sun gear to produce an annular flow of lubricant.

CONTINUOUSLY AND/OR INFINITELY VARIABLE TRANSMISSIONS AND METHODS THEREFOR - An infinitely variable transmission (IVT) having a rotatable input shaft arranged along a longitudinal axis of the transmission. In one embodiment, the input shaft is adapted to supply a lubricant to the interior of the transmission. In some embodiments, a stator assembly is coupled to, and coaxial with, the input shaft. The IVT has a plurality of planets operably coupled to the stator assembly. The planets are arranged angularly about the longitudinal axis of the transmission. In one embodiment, a traction ring is operably coupled to the planets. The WT is provided with a housing that is operably coupled to the traction ring. The housing is substantially fixed from rotating with the input shaft. The traction ring is substantially fixed from rotating with the input shaft. In some embodiments, the IVT is provided with a lubricant manifold that is configured to supply a lubricant to the input shaft.

03-21-2013

20130072339

AUTOMATIC GEARBOX TRANSMISSION SYSTEM FOR ELECTROMECHANICAL HYBRID POWER VEHICLE - A drive train for an automatic transmission for an electromechanical hybrid vehicle is disclosed. The drive train is designed as a whole consisting of only 29 major parts and units, capable of generating 6 forward shifts and 1 reverse shift. A motor is wholly arranged on an input shaft such that the rotation speeds of the motor and the input shaft are synchronous. The motor has the functions of an electric generator and can drive a vehicle to run by a reactive force generated by the magnetic field of the electric generator such that the vehicle generates power during running and therefore avoids consuming the power of the engine due to the load of the electric generator, and thus, the aim of power conservation is achieved. In the hybrid drive mode, the vehicle does not need a clutch and a brake to shift the gear at the moment of startup and during running and therefore realizes stepless transmission and can transmit a large torque.

03-21-2013

20130178321

AWD VEHICLE WITH ACTIVE DISCONNECT COUPLING HAVING CONTROLLED LUBRICATION - A vehicle drive train includes a first power disconnection device and a first driveline for transferring torque to a first set of wheels. A second driveline for transferring torque to a second set of wheels includes a differential gearset having an output coupled to a second power disconnection device. A hypoid gearset is positioned within the second driveline in a power path between the first and second power disconnection devices. The second power disconnection device includes a clutch having a first set of clutch plates fixed for rotation with the differential gearset output. The clutch further includes a second set of clutch plates fixed for rotation with a shaft adapted to transfer torque to one of the wheels of the second set of wheels. A valve limits a flow of coolant to the clutch when the second power disconnection device operates in a disconnected mode.

07-11-2013

20140106922

OIL SCAVENGE ARRANGEMENT - An epicyclic gearbox including: a sun gear, a ring gear, an array of planet gears that each mesh with the sun gear and the ring gear and rotate relative thereto, and a planet carrier that couples the planet gears in relative position to each other. The planet carrier includes interplanetary portions that are located between adjacent pairs of planet gears and have a first and a second circumferential surface facing each adjacent planet gear; and direction features on at least one of the circumferential surfaces that, in use, direct fluid ejected with a radial component from the planet gears and direct it with an axial component.

04-17-2014

20130184114

CARRIER FOR PLANETARY GEAR SYSTEM - A planetary gear system includes a sun gear rotatable about an axis. Planetary gears are circumferentially arranged about and intermesh with the sun gear and peripherally with a ring gear. Each of the planetary gears is supported by a journal bearing arranged in a bore in a carrier wall. A carrier supports the journal bearings and is configured to rotate about the axis and carry the planetary gears. The carrier wall supports the journal bearings and has spaced apart lateral surfaces. A scupper is arranged between the lateral surfaces and provides an inlet in one of the lateral surfaces, in this example facing the sun gear. The inlet has a first circumferential dimension, and a passage fluidly interconnects the scupper to one of the journal bearings via the bore. The passage has a second circumferential dimension less than the first circumferential dimension.

07-18-2013

20130225353

DEVICE FOR LUBRICATING AN EPICYCLOIDAL REDUCTION GEAR - A reduction gear includes a sun pinion and planet pinions driven by the sun pinion and rolling on a fixed ring gear. The device includes an oil tank, an oil supply duct and oil routing ducts. The device also includes an oil ejection device at the end of the fixed supply duct, the orientation of which includes a radial component directed away from a common axis of rotation, and a cylindrical device for recovering the oil that can move in rotation about the common axis of rotation. The oil ejection device is linked by at least one duct to a lubrication device for the gear formed by the cooperation of the teeth of at least one planet pinion with an adjacent pinion. This device feeds the ducts which supply the oil to the parts to be lubricated, by virtue of the action of the centrifugal field.

08-29-2013

20130231210

DRIVE APPARATUS AND CONSTRUCTION MACHINE PROVIDED WITH SAME - A drive apparatus for a construction machine includes: a motor having a motor shaft; a speed reducer unit having a speed reducer output shaft and a casing and reducing speed of rotation force of the motor, and transmitting the force to an upper slewing body; and a cooler formed with a coolant path through which liquid or gas for cooling lubricating oil inside the casing passes as a cooling medium, wherein the motor and the speed reducer unit are provided in a row in an apparatus-axis direction such that the motor shaft and the speed reducer output shaft are arranged along the same line, and the cooler is provided in a row with the speed reducer unit in the apparatus-axis direction in a state where at least a part of the cooler is immersed in the lubricating oil, so as to enable heat exchange with the lubricating oil.

09-05-2013

20130130858

GEAR TRAIN FOR A WIND TURBINE - A gear train includes at least one planetary gear stage and one gear train stage. One end of a sun shaft of the planetary gear stage is concentrically surrounded by a hollow shaft of the second gear train stage. The sun shaft of the planetary gear stage is co-rotationally coupled to the hollow shaft by a denture clutch. A lubricant feed ring is arranged at a front face of the hollow shaft facing toward the sun gear of the planetary gear stage and has a cone-shaped passage opening, which has an internal diameter which decreases in the direction of the sun gear of the planetary gear stage, and concentrically surrounds the sun shaft of the planetary gear stage. At least one lubricant feed nozzle is aligned with a circumferential gap between the lubricant feed ring and the sun shaft of the planetary gear stage.